1948 Jefferson nickle

Can anyone please explain the looks of this coin? It appears to be the same type of metal as the nickle itsself.
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Can anyone please explain the looks of this coin? It appears to be the same type of metal as the nickle itsself.
Comments
Looks like solder to me
Collector, occasional seller
It appears your nickel has solder on it.
Post mint damage via solder. Value is five cents.
Perhaps solder, but it also looks like it might be old, ancient glue.
In honor of the memory of Cpl. Michael E. Thompson
The first 5 pictures were sufficient.
Lead solder
BHNC #203
Weigh it. If it's over 5 grams solder is your answer.
Before I offer an opinion I will need more pictures.
Preferably shot from farther away...
Do you think that, using only your thumb, you could rub away that solder? 🤔
On the reverse is some substance bonded to the surface
Jefferson looks like abraded away
I'm in the solder camp.
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PICKLE and NICKEL
While the pictures are helpful, you might want to crop them... and then just pick a few that highlight the coin.
U.S. Type Set
At least nobody quoted them. I hate that 😡
It appears that someone attempted to solder a pin/clasp to the reverse of your nickel. You could try acetone to see if there are any organics present. It will not harm the nickel and it will not remove solder. Cheers, RickO
It is a nickel!
Beside the solder - just wear on the obverse - maybe somebody needed a spacer of some sort
"When they can't find anything wrong with you, they create it!"
Yes, for sure all different angles.
It is not magnetic. I believe solder would be magnetic
Nevermind. Solder is not magnetic. I apologize..
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